mirror of
https://github.com/Gericom/teak-llvm.git
synced 2025-06-26 23:09:03 -04:00
29d9bea93f
Summary: This does not yet give us a clean testsuite run but it does help with: 1. Actually building on linux 2. Run the testsuite with over 70% tests passing on linux. Reviewers: tfiala, labath, zturner Subscribers: lldb-commits Differential Revision: http://reviews.llvm.org/D17182 llvm-svn: 260721
101 lines
2.6 KiB
C++
101 lines
2.6 KiB
C++
// NOTE: Since Python may define some pre-processor definitions which affect the
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// standard headers on some systems, you must include Python.h before any
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// standard headers are included.
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#include "Python.h"
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#include <stdio.h>
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#ifndef LLDB_DISABLE_LIBEDIT
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#include <editline/readline.h>
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#endif
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// Simple implementation of the Python readline module using libedit.
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// In the event that libedit is excluded from the build, this turns
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// back into a null implementation that blocks the module from pulling
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// in the GNU readline shared lib, which causes linkage confusion when
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// both readline and libedit's readline compatibility symbols collide.
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//
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// Currently it only installs a PyOS_ReadlineFunctionPointer, without
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// implementing any of the readline module methods. This is meant to
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// work around LLVM pr18841 to avoid seg faults in the stock Python
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// readline.so linked against GNU readline.
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#ifndef LLDB_DISABLE_LIBEDIT
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PyDoc_STRVAR(
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moduleDocumentation,
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"Simple readline module implementation based on libedit.");
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#else
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PyDoc_STRVAR(
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moduleDocumentation,
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"Stub module meant to avoid linking GNU readline.");
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#endif
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#if PY_MAJOR_VERSION >= 3
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static struct PyModuleDef readline_module =
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{
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PyModuleDef_HEAD_INIT, // m_base
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"readline", // m_name
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moduleDocumentation, // m_doc
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-1, // m_size
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nullptr, // m_methods
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nullptr, // m_reload
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nullptr, // m_traverse
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nullptr, // m_clear
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nullptr, // m_free
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};
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#else
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static struct PyMethodDef moduleMethods[] =
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{
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{nullptr, nullptr, 0, nullptr}
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};
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#endif
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#ifndef LLDB_DISABLE_LIBEDIT
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static char*
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#if PY_MAJOR_VERSION >= 3
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simple_readline(FILE *stdin, FILE *stdout, const char *prompt)
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#else
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simple_readline(FILE *stdin, FILE *stdout, char *prompt)
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#endif
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{
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rl_instream = stdin;
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rl_outstream = stdout;
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char* line = readline(prompt);
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if (!line)
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{
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char* ret = (char*)PyMem_Malloc(1);
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if (ret != NULL)
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*ret = '\0';
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return ret;
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}
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if (*line)
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add_history(line);
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int n = strlen(line);
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char* ret = (char*)PyMem_Malloc(n + 2);
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strncpy(ret, line, n);
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free(line);
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ret[n] = '\n';
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ret[n+1] = '\0';
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return ret;
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}
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#endif
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PyMODINIT_FUNC
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initreadline(void)
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{
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#ifndef LLDB_DISABLE_LIBEDIT
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PyOS_ReadlineFunctionPointer = simple_readline;
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#endif
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#if PY_MAJOR_VERSION >= 3
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return PyModule_Create(&readline_module);
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#else
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Py_InitModule4(
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"readline",
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moduleMethods,
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moduleDocumentation,
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static_cast<PyObject *>(NULL),
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PYTHON_API_VERSION);
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#endif
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}
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